EP0425937A3 - Support for a measuring scale - Google Patents

Support for a measuring scale Download PDF

Info

Publication number
EP0425937A3
EP0425937A3 EP19900120085 EP90120085A EP0425937A3 EP 0425937 A3 EP0425937 A3 EP 0425937A3 EP 19900120085 EP19900120085 EP 19900120085 EP 90120085 A EP90120085 A EP 90120085A EP 0425937 A3 EP0425937 A3 EP 0425937A3
Authority
EP
European Patent Office
Prior art keywords
measuring scale
support
measuring
amorphous structure
quality
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19900120085
Other languages
German (de)
Other versions
EP0425937B1 (en
EP0425937A2 (en
Inventor
Heinz Kraus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dr Johannes Heidenhain GmbH
Original Assignee
Dr Johannes Heidenhain GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dr Johannes Heidenhain GmbH filed Critical Dr Johannes Heidenhain GmbH
Priority to AT90120085T priority Critical patent/ATE99798T1/en
Publication of EP0425937A2 publication Critical patent/EP0425937A2/en
Publication of EP0425937A3 publication Critical patent/EP0425937A3/en
Application granted granted Critical
Publication of EP0425937B1 publication Critical patent/EP0425937B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
    • G01D5/34707—Scales; Discs, e.g. fixation, fabrication, compensation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Led Devices (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

The support (1) for a measuring scale of a photo-electric position measuring device is of metal and thus optimally matches the thermal coefficient of expansion of a machine tool or measuring machine. The measuring scale (4) is located on a surface area (2) which has an amorphous structure (3). The amorphous structure (3) is achieved by re-fusing and has properties like glass which ensures a high-quality surface quality. <IMAGE>
EP90120085A 1989-10-31 1990-10-19 Support for a measuring scale Expired - Lifetime EP0425937B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90120085T ATE99798T1 (en) 1989-10-31 1990-10-19 DIVISION CARRIER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3936154 1989-10-31
DE3936154A DE3936154A1 (en) 1989-10-31 1989-10-31 DIVISION CARRIERS

Publications (3)

Publication Number Publication Date
EP0425937A2 EP0425937A2 (en) 1991-05-08
EP0425937A3 true EP0425937A3 (en) 1991-07-17
EP0425937B1 EP0425937B1 (en) 1994-01-05

Family

ID=6392538

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90120085A Expired - Lifetime EP0425937B1 (en) 1989-10-31 1990-10-19 Support for a measuring scale

Country Status (3)

Country Link
EP (1) EP0425937B1 (en)
AT (1) ATE99798T1 (en)
DE (2) DE3936154A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5963330A (en) * 1996-11-13 1999-10-05 Dr. Johannes Heidenhain Gmbh Optical position measuring device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2341655A1 (en) * 1976-02-17 1977-09-16 United Technologies Corp SUPERFICIAL FUSION PROCESS

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2341655A1 (en) * 1976-02-17 1977-09-16 United Technologies Corp SUPERFICIAL FUSION PROCESS

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
LE VIDE, LES COUCHES MINCES, Nr. 243, August-Oktober 1988, Seiten 545-563; G. COQUERELLE: "Traitements de surface par laser" *
STAHL UND EISEN, Band 109, Nr. 21, 23. Oktober 1989, Seiten 76,995-997; W. KÖNIG et al.: "Laserstrahloberflächenbehandlung auf dem Weg zum Fertigungsverfahren" *

Also Published As

Publication number Publication date
DE3936154A1 (en) 1991-05-02
EP0425937B1 (en) 1994-01-05
DE59004125D1 (en) 1994-02-17
ATE99798T1 (en) 1994-01-15
EP0425937A2 (en) 1991-05-08

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